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Machinability Of Metals Chart

MachinabilityOfMetalsChart.pdf

Machinability of Metals

(Based on 100% machinability for AISI 1212 steel)
Carbon Steels: Percentage
1015 72%
1018 78%
1020 72%
1022 78%
1030 70%
1040 64%
1042 64%
1050 54%
1095 42%
1117 91%
1137 72%
1141 70%
1141 annealed 81%
1144 76%
1144 annealed 85%
1144 stressproof 83%
1212 100%
1213 136%
12L14 170%
1215 136%
Alloy Steels: Percentage
2355 annealed 70%
4130 annelaed 72%
4140 annealed 66%
4142 annealed 66%
41L42 77%
4150 annealed 60%
4340 annealed 57%
4620 66%
4820 annealed 49%
52100 annealed 40%
6150 annealed 60%
8620 66%
86L20 77%
9310 annealed 51%
Stainless Steels and Super Alloys: Percentage
302 annealed 45%
303 annealed 78%
304 annealed 45%
316 annealed 45%
321 annealed 36%
347 annealed 36%
410 annealed 54%
416 annealed 110%
420 annealed 45%
430 annealed 54%
431 annealed 45%
440A 45%
15-5PH condition A 48%
17-4PH condition A 48%
A286 aged 33%
Hastelloy X 19%
Tool Steels: Percentage
A-2 42%
A-6 33%
D-2 27%
D-3 27%
M-2 39%
O-1 42%
O-2 42%
Gray Caast Iron: Percentage
ASTM class 20 annealed 73%
ASTM class 25 55%
ASTM class 30 48%
ASTM class 35 48%
ASTM class 40 48%
ASTM class 45 36%
ASTM class 50 36%
Nodular Iron: Percentage
60-40- 18 annealed 61%
65-45- 12 annealed 61%
80-55-06 39%
Aluminum and Magnesium Alloys: Percentage
aluminum, cold drawn 360%
aluminum, cast 450%
aluminum, die cast 76%
magnesium, cold drawn 480%
magnesium, cast 480%

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